Problem with boot cd !

I wanna make backup of my cd xp instalI, i copy the entire cd xp install sp1 to the hard drive, open nero, and choose boot cd ( nerolight 8 ), and after that he ask me to image files, i use the own that came with nero, Choose some emultion, don't now what it is, choose sectors...i selected, and burn. he do the boot, but to dos, i know how to get from there to the install folder, but this is not what i wanna get.

Explain :

From the cd i have ( That lost now ), i was putting the cd on the optic drive, restart the computer, config the bios to start with cd, and he was giving me the message : "press any key to load from cd",
that's what i wanna get ! this process.